|
STOCK-BASED COMPENSATION Deferred Compensation Arrangement (Details) (USD $)
|
3 Months Ended |
|
Mar. 31, 2014
|
Mar. 31, 2013
|
| Deferred Compensation Arrangement with Employees and Non Employees, Share Based Payments [Line Items] |
|
|
| Fair value of shares withheld for tax withholding obligations |
$ 2,700,000 |
$ 2,800,000 |
|
Director [Member]
|
|
|
| Deferred Compensation Arrangement with Employees and Non Employees, Share Based Payments [Line Items] |
|
|
| Vesting period |
1 year |
|
| Fair value of shares issued |
160,000 |
138,000 |
| Deferred Compensation Arrangement with Individual, Shares Issued |
5,000 |
|
|
Restricted Stock and Units [Member]
|
|
|
| Deferred Compensation Arrangement with Employees and Non Employees, Share Based Payments [Line Items] |
|
|
| Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period |
57,527 |
|
| Shares withheld for tax withholding obligations (in shares) |
78,924 |
88,063 |
|
Restricted Stock and Units [Member] | Selling, General and Adminstrative Expense [Member]
|
|
|
| Deferred Compensation Arrangement with Employees and Non Employees, Share Based Payments [Line Items] |
|
|
| Compensation expense |
900,000 |
767,000 |
|
Restricted Stock and Units [Member] | Research and Development Expense [Member]
|
|
|
| Deferred Compensation Arrangement with Employees and Non Employees, Share Based Payments [Line Items] |
|
|
| Compensation expense |
374,460.62 |
300,000 |
|
Performance Shares [Member]
|
|
|
| Deferred Compensation Arrangement with Employees and Non Employees, Share Based Payments [Line Items] |
|
|
| Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period |
36,092 |
|
|
Performance Shares [Member] | Selling, General and Adminstrative Expense [Member]
|
|
|
| Deferred Compensation Arrangement with Employees and Non Employees, Share Based Payments [Line Items] |
|
|
| Compensation expense |
461,000 |
38,000 |
|
Performance Shares [Member] | Research and Development Expense [Member]
|
|
|
| Deferred Compensation Arrangement with Employees and Non Employees, Share Based Payments [Line Items] |
|
|
| Compensation expense |
$ 173,000 |
$ 11,000 |